Every relationship goes through a series of highs and lows, instances when everything is perfect between the two people involved or when everything is a mess and you are ready to throw in the towel, or even go through the process of a break up or divorce. It is these times when some objective insight or so-called "relationship rescue" is required. 

First of all, depending on the particulars of your situation you may want to confide in close friends and relatives who are familiar with the habits of both people involved in the situation, conversely, you might seek the advice of a professional who can be entirely impartial, such as a therapist or marriage counselor. You may even think it is best to spend some time on your own examining your thoughts and the workings of the relationship. Whatever you decide, be prepared to admit to your faults and brave enough to begin to work on them.